<!DOCTYPE html>
<meta charset=utf-8>
<title>Test for 814497</title>
<script src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
<div id="log"></div>
<script>
  var c = Components.classes;
  var Ci = Components.interfaces;
  var Cu = Components.utils;

  Cu.import("resource://gre/modules/XPCOMUtils.jsm");
  Cu.import("resource://gre/modules/Services.jsm");

  SimpleTest.waitForExplicitFinish();
  SimpleTest.expectUncaughtException();

  // /!\ Line number is important in this test,
  //     we are asserting the following functions line #
  function failingStack() {
    nestedFunction();
  }
  function nestedFunction() {
    doesntExistsAndThrow();
  }

  var TestObserver = {
    QueryInterface: XPCOMUtils.generateQI([Ci.nsIObserver]),

    observe: function test_observe(aSubject)
    {
      if (!(aSubject instanceof Ci.nsIScriptError)) {
        return;
      }
      dump("stack: "+aSubject.stack+"\n");

      // Main assertions
      var s = aSubject.stack;
      ok(!!s, "has first frame");
      ok(s.source.indexOf("test_nsScriptErrorWithStack.html") !== -1, "source is correct");
      is(s.line, 23, "line is correct");
      is(s.column, 5, "column is correct");
      is(s.functionDisplayName, "nestedFunction");
      s = s.parent;
      ok(!!s, "has second frame");
      ok(s.source.indexOf("test_nsScriptErrorWithStack.html") !== -1, "source is correct");
      is(s.line, 20, "line is correct");
      is(s.column, 5, "column is correct");
      is(s.functionDisplayName, "failingStack");
      // We shouldn't have any more frame as we used setTimeout
      ok(!s.parent, "has no more frames");

      // Cleanup
      Services.console.unregisterListener(TestObserver);
      SimpleTest.finish();
    }
  };

  Services.console.registerListener(TestObserver);

  // use setTimeout in order to prevent throwing from test frame
  // and so have a clean stack frame with just our method calls
  setTimeout(failingStack, 0);
</script>
